/* MiniUPnP project * http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/ * author: Ryan Wagoner and Thomas Bernard * (c) 2007 Darren Reed * This software is subject to the conditions detailed * in the LICENCE file provided within the distribution */#include <syslog.h>#include <string.h>#include <stdlib.h>#include <ctype.h>#include <kstat.h>#include <sys/sysmacros.h>#include "../getifstats.h"int getifstats(const char * ifname, struct ifdata * data){	char buffer[64], *s;	kstat_named_t *kn;	kstat_ctl_t *kc;	int instance;	kstat_t *ksp;	uint32_t cnt32;	void *ptr;	if (ifname == NULL || *ifname == '\0')		goto error;	s = (char *)ifname + strlen(ifname);	s--;	while ((s > ifname) && isdigit(*s))		s--;	s++;	instance = atoi(s);	strlcpy(buffer, ifname, MIN(s - ifname + 1, 64));	kc = kstat_open();	if (kc != NULL) {		ksp = kstat_lookup(kc, buffer, instance, (char *)ifname);		if (ksp && (kstat_read(kc, ksp, NULL) != -1)) {			/* found the right interface */			if (sizeof(long) == 8) {				uint64_t cnt64;				kn = kstat_data_lookup(ksp, "rbytes64");				if (kn != NULL) {					data->ibytes = kn->value.i64;				}				kn = kstat_data_lookup(ksp, "ipackets64");				if (kn != NULL) {					data->ipackets = kn->value.i64;				}				kn = kstat_data_lookup(ksp, "obytes64");				if (kn != NULL) {					data->obytes = kn->value.i64;				}				kn = kstat_data_lookup(ksp, "opackets64");				if (kn != NULL) {					data->opackets = kn->value.i64;				}			} else {				kn = kstat_data_lookup(ksp, "rbytes");				if (kn != NULL) {					data->ibytes = kn->value.i32;				}				kn = kstat_data_lookup(ksp, "ipackets");				if (kn != NULL) {					data->ipackets = kn->value.i32;				}				kn = kstat_data_lookup(ksp, "obytes");				if (kn != NULL) {					data->obytes = kn->value.i32;				}				kn = kstat_data_lookup(ksp, "opackets");				if (kn != NULL) {					data->ipackets = kn->value.i32;				}			}			kn = kstat_data_lookup(ksp, "ifspeed");			if (kn != NULL) {				data->baudrate = kn->value.i32;			}			kstat_close(kc);			return 0;	/* ok */		}		syslog(LOG_ERR, "kstat_lookup/read() failed: %m");		kstat_close(kc);		return -1;	} else {		syslog(LOG_ERR, "kstat_open() failed: %m");	}error:	return -1;	/* not found or error */}